EMU: Evolutionary Map of the Universe

By R. Norris, Andrew M. Hopkins, J. Afonso, S. Brown, J. Condon, L. Dunne, I. Feain, R. Hollow, M. Jarvis, M. Johnston-Hollitt and 47 more. Publications Astronomical Society of Australia, 2011

273 citations recorded by the source corpus.

Abstract EMU is a wide-field radio continuum survey planned for the new Australian Square Kilometre Array Pathfinder (ASKAP) telescope. The primary goal of EMU is to make a deep (rms ∼ 10 μJy/beam) radio continuum survey of the entire Southern sky at 1.3 GHz, extending as far North as +30° declination, with a resolution of 10 arcsec. EMU is expected to detect and catalogue about 70 million galaxies, including typical star-forming galaxies up to z ∼ 1, powerful starbursts to even greater redshifts, and active galactic nuclei to the edge of the visible Universe. It will undoubtedly discover new classes of object. This paper defines the science goals and parameters of the survey, and describes the development of techniques necessary to maximise the science return from EMU.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/0d8b36f92bc9977df6332d9f12ffaedab2cb8be4

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In Astronomy and Astrophysics

1. D. M. Alexander
2. L. Hernquist
3. C. Carilli
4. P. Hopkins
5. P. Capak
6. W. N. Brandt
7. Mara Salvato
8. F. Walter

In Instrumentation

1. D. M. Alexander
2. P. Capak
3. Mara Salvato
4. O. Ilbert
5. N. Scoville
6. W. N. Brandt
7. H. McCracken
8. C. Carilli

Citations in the corpus

• The VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS (2014, background): “In due course these fluxes can be compared with existing and also new radio continuum fluxes coming on stream (see e.g. Norris et al. 2011) in order to determine reliable extinction values for many faint nebulae currently lacking data.”
• EXTENDING THE NEARBY GALAXY HERITAGE WITH WISE: FIRST RESULTS FROM THE WISE ENHANCED RESOLUTION GALAXY ATLAS (2012, background): “Notably the ASKAP-WALLABY (Koribalski & Staveley-Smith, in prep) and EMU (Norris et al. 2011) projects will extract neutral hydrogen content and radio continuum (e.g., synchrotron) emission from galaxies in the local universe, both of which in combination with WISE provide insight to the present…”
• The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release (2017, background): “In this context, large area surveys down to unprecedented depths are planned with new and upgraded facilities (e.g., VLA, Westerbork, Australian Square Kilometre Array Pathfinder, MeerKAT, and Square Kilometre Array; e.g., Jarvis 2012; Norris et al. 2011, 2013, 2015; Prandoni & Seymour 2015).”
• The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science Case and Survey Design (2019, methodology): “…al. 2016)]; surveys using the Australian Square Kilometer Array Pathfinder [ASKAP, in particular the Evolutionary Map of the Universe (EMU) survey (Norris et al. 2011) and the Polarization Sky Survey of the Universe’s Magnetism (POSSUM) (Gaensler et al. 2010)]; the Westerbork Synthesis Radio…”
• wsclean: an implementation of a fast, generic wide-field imager for radio astronomy (2014, background): “…surveys or array configurations: The Galactic and Extragalactic MWA survey (GLEAM); the Evolutionary Map of the Universe (EMU) ASKAP survey (Norris et al. 2011); the low and high bands of the LOFAR Multi-frequency Snapshot Sky Survey (MSSS)3; all Dutch LOFAR stations (Van Haarlem et al.…”
• The many flavours of photometric redshifts (2018, background): “This is particular relevant considering that wide or all-sky surveys such as eROSITA [108] in X-ray and EMU [109] in the Radio are expected to detect million of AGN that will be used as cosmological probes and for evolutionary studies.”
• The LOFAR Two-metre Sky Survey. I. Survey description and preliminary data release (2016, unknown): “By comparison, the Evolutionary Map of the Universe (EMU; Norris et al. 2011) and APERture Tile In Focus (Apertif; Röttgering et al. 2011) 1.4 GHz surveys, whilst at lower resolution, aim to reach a depth of ∼ 10 µ Jy/beam (corresponding to 50 µ Jy/beam at 150 MHz for α ∼ − 0 .”
• Diffuse Radio Emission from Galaxy Clusters (2019, background): “…Survey at 2–4 GHz (VLASS; Lacy et al. 2016; Myers et al. 2016), and future surveys carried out with MeerKat (Booth et al. 2009; Jonas 2009), ASKAP (Norris et al. 2011; Gaensler et al. 2010), and WSRTAPERTIF (Verheijen et al. 2008; Adams et al. 2018) will provide larger samples of polarized radio…”
• H i intensity mapping: a single dish approach (2012, unknown): “…of our source count into the low flux density ( 0.1 mJy) regime may be unreliable (e.g. because the ARCADE results may imply an unexpectedly large population of very weak sources) and can only be firmly established by ultradeep radio surveys with upcoming telescopes (e.g. Norris et al. (2011)).”
• RESOLVING THE RADIO SOURCE BACKGROUND: DEEPER UNDERSTANDING THROUGH CONFUSION (2012, background): “(27) For example, the proposed EMU (Extragalactic Map of the Universe) survey will cover most of the sky at ν = 1.3 GHz with θ = 10′′ resolution (Norris et al. 2011) and rms noise σn = 10µJy beam −1.”
• Cosmic X-ray surveys of distant active galaxies (2015, background): “However, substantially deeper radio surveys are now being undertaken over >∼ 1,000 deg 2 and many aim to cover the majority of the visible sky (e.g., at low <∼ 200 MHz frequencies: GMRT-TGSS; LOFAR; MWA; at mid ≈ 1 GHz frequencies: Apertif-WODAN; ASKAP-EMU; MeerKAT-MIGHTEE; VLA-VLASS; see Norris et ”
• THE LAST OF FIRST: THE FINAL CATALOG AND SOURCE IDENTIFICATIONS (2015, methodology): “The resolution for WODAN (Röttgering et al. 2011) is of order 15×17 arcsec, while the resolution for ASKAP-EMU (Norris et al. 2011) is 10 arcsec.”